The giant honeycomb oyster (Hyotissa hyotis) is a very large saltwater oyster, a marine bivalve mollusk.

Species in this family are known as honeycomb oysters or "foam oysters" because under magnification, their shell structure is foam-like.

Like most bivalves, the giant honeycomb oyster is a filter feeder.

Hyotissa hyotis. Retrieved May, 22 2023, from en.wikipedia.org/wiki/Giant_honeycomb_oyster.